Here is how your sleeptime impacts or decides your lifespan also know more on Oversleeping

Sleeping more than nine hours and sitting too much during the day -- along with a lazy lifestyle -- can send you to an early grave, warn researchers

Sleeping more than nine hours and sitting too much during the day — along with a lazy lifestyle — can send you to an early grave, warn researchers. According to the findings from non-profit organisation Sax Institute’s ‘45 and Up Study’, a person who sleeps too much, sits too much and is not physically active enough is more than four times as likely to die early as a person without those unhealthy lifestyle habits. Too much sitting equates to more than seven hours a day and too little exercise is defined as less than 150 minutes a week. This is the first study to look at how those things (sleep and sitting) might act together.

When you add a lack of exercise into the mix, you get a type of ‘triple whammy’ effect.  ‘Our study shows that we should really be taking these behaviours together as seriously as we do other risk factors such as levels of drinking and unhealthy eating patterns,’ Dr Ding added. Dr Ding and her colleagues from University of Sydney analysed the health behaviours of more than 230,000 of the participants in the ‘45 and Up Study’. They looked at lifestyle behaviours like smoking, high alcohol intake, poor diet and being physically inactive and added excess sitting time and too little/too much sleep into the equation.

The team found another problematic triple threat: smoking, high alcohol intake and lack of sleep (less than seven hours a night) is also linked to a more than four-times greater risk of early death. ‘The take-home message is that if we want to design public health programmes that will reduce the massive burden and cost of lifestyle-related disease we should focus on how these risk factors work together rather than in isolation,’ explained study co-author professor Adrian Bauman. The non-communicable diseases (such as heart disease, diabetes and cancer) now kill more than 38 million people around the world and cause more deaths than infectious disease.

Oversleeping:

When it comes to sleep, can you have too much of a good thing? It's true a good night's sleep is essential for health. But oversleeping has been linked to a host of medical problems, including diabetes, heart disease, and increased risk of death.

Researchers are careful to note, however, that two other factors --depression and low socioeconomic status -- are strongly associated with oversleeping. Those two factors may be the reason for the observed negative health effects. For example, people of lower socioeconomic status may have less access to health care and therefore more undiagnosed illnesses, such as heart disease, which, in turn, may cause oversleeping.

Oversleeping: How Much Sleep Is Too Much?

The amount of sleep you need varies significantly over the course of your lifetime. It depends on your age and activity level as well as your general health and lifestyle habits. For instance, during periods of stress or illness, you may feel an increased need for sleep. But although sleep needs differ over time and from person to person, experts typically recommend that adults should sleep between seven and nine hours each night.

Why Do People Sleep Too Much?

For people who suffer from hypersomnia, oversleeping is actually a medical disorder. The condition causes people to suffer from extreme sleepiness throughout the day, which is not usually relieved by napping. It also causes them to sleep for unusually long periods of time at night. Many people with hypersomnia experience symptoms of anxiety, low energy, and memory problems as a result of their almost constant need for sleep.

Obstructive sleep apnea, a disorder that causes people to stop breathing momentarily during sleep, can also lead to an increased need for sleep. That's because it disrupts the normal sleep cycle.

Of course, not everyone who oversleeps has a sleep disorder. Other possible causes of oversleeping include the use of certain substances, such as alcohol and some prescription medications. Other medical conditions, including depression, can cause people to oversleep. And then there are people who simply want to sleep a lot.